I added a way to create component that should have a short lifecycle (1 cycle of run systems) that can allow to update entities only if needed.

For exemple, for buttons, I don't want to check all entities if there state has changed in every system that use button component so went I hover or click on a button, I've added a temporary component HasChanged<Button> to only check these entities.

To add this feature inside your project, just add Entity::RemoveTemporaryComponents at the end of all of your systems and call AddTemporaryComponent to add a temporary component.